Dear Support Community
I have a stack of 3850 Switches (running IOS 03.06.05E) - I need to ensure the switch are ipv6 enabled. Having checked the SDM template I can see it is running the "Advanced (high scale) template"
I can see to enable IPV6 support I need to run "sdm prefer dual-ipv4-and-ipv6 default", however I do not have the available command in global configuration mode. The only option is "sdm prefer advanced"
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Showing SDM Template Info
This is the Advanced (high scale) template.
Number of VLANs: 4094
Unicast MAC addresses: 32768
Overflow Unicast MAC addresses: 512
IGMP and Multicast groups: 8192
Overflow IGMP and Multicast groups: 512
Directly connected routes: 16384
Indirect routes: 7168
Security Access Control Entries: 3072
QoS Access Control Entries: 3072
Policy Based Routing ACEs: 1024
Netflow ACEs: 768
Wireless Input Microflow policer ACEs: 256
Wireless Output Microflow policer ACEs: 256
Flow SPAN ACEs: 512
Tunnels: 256
Control Plane Entries: 512
Input Netflow flows: 8192
Output Netflow flows: 16384
SGT/DGT entries: 4096
SGT/DGT Overflow entries: 512
These numbers are typical for L2 and IPv4 features. Some features such as IPv6, use up double the entry size; so only half as many entries can be created.
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Question is, is the switches already enabled for ipv6, and if not do I need to update the IOS in order to be able to run the command. I need to be able to run IPV6 so my hyper-converged devices can discover themselves using ipv6
thanks in advance
